The differences in the filter are only in the filling with carbon chips in the old model, the filter literally oozes carbon, but in the modern version it is quite weak, occasional filling
Is Tobacco Physically or Psychologically Addictive
Am J Physiol Lung Cell Mol Physiol 303:L814L823 Monick MM, Powers LS, Walters K, Lovan N, Zhang M, Gerke A, Hansdottir S, Hunninghake GW (2010) Identification of an autophagy defect in smokers alveolar macrophages
The aerosol liquid in e-cigarettes contains ultrafine particles that can be inhaled deep into the lungs, flavorants such as diacetyl, a chemical linked to serious lung disease, volatile organic compounds and heavy metals, such as nickel, tin and lead, according to the website